Could be a triple nickel of it's a v8. I know they had a gas abortion mess at one time. I don't know those engines if I looked at them though. Past my time. Where are you at though. I have never found that kinda stuff just up and left
Big South Fork of the Cumberland River.
It was in a sketchy place so I vacated before I saw the spark plug, but lack of fuel injection is what tipped me off.
We haven't had many issues out of our 555 besides the cast up pipes to the turbo breaking. There were big and small cam versions so I'm sure that makes a difference in worth.
They are a neat little engine, seems to be pretty economical too.